20651300

素因数分解:

$2^2\times 5^2\times {\mathrm{97}}^1\times {\mathrm{2129}}^1$

素因数の和:2240

約数の個数: 36

約数和(自身を含む): 45296580

約数和(自身を除く): 24645280

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 97, 100, 194, 388, 485, 970, 1940, 2129, 2425, 4258, 4850, 8516, 9700, 10645, 21290, 42580, 53225, 106450, 206513, 212900, 413026, 826052, 1032565, 2065130, 4130260, 5162825, 10325650, 20651300]

約数ペア:

[(1, 20651300), (2, 10325650), (4, 5162825), (5, 4130260), (10, 2065130), (20, 1032565), (25, 826052), (50, 413026), (97, 212900), (100, 206513), (194, 106450), (388, 53225), (485, 42580), (970, 21290), (1940, 10645), (2129, 9700), (2425, 8516), (4258, 4850)]